Service Adjustment Procedures - Mitsubishi Electric 55624R(S)-MF Service Manual

REAR WINDOW DEFOGGER -
OPERATION
When the defogger switch is turned ON with
l
the ignition switch in ON position, the defogger
relay is energized causing defogger to operate.
At the same time, the defogger indicator light
l
lights up indicating that the defogger is in
operation.
The defogger timer keeps the defogger relay
l
remaining energized for 10 minutes after the
defoaaer switch has been turned ON. If the
this lo-min. period, timer is cancelled and the
defogger is turned off.
Normal characteristic curve
Voltage
Abnormal characteristic curve
0"
terminal
Break
Conductive
paint
THE PRINTED-HEATER LINES CHECK
battery at full.
(2) Turn ON rear window defogger switch. Measure heater
element voltage with circuit tester at rear window glass
center A.
Condition good if indicating about 6V.
(3) If 12 V is indicated at A, there is a break in the negative
terminals from A.
Move test bar slowly to negative terminal to detect where
voltage changes suddenly (0 V).
Open-circuit
(4) If 0 V is indicated at A, there is a break in the positive
terminals from A. Detect where the voltage changes
suddenly (12 V) with the same method described.
terminal
THE PRINTED-HEATER LINES REPAIR
Tape REQUIRED MATERIALS
Thinner
l
Tape
l
Conductive paint
l
along both sides of heater element.
(2) Mix conductive paint thoroughly. Thin the required
amount of paint in a separate container with a small
amount of thinner and paint break three times at 15
minute intervals.
(3) Remove tape and leave for a while before use (circuit
complete).
(4) When completely dry (after 24 hours) finish exterior with a
knife.
Caution
Clean glass with a soft cloth (dry or damp) along
defogger heater element.
TSB Revision
Troubleshooting/Service Adjustment Procedures
TROUBLESHOOTING HINTS
1. Defogger is inoperative.
1) Indicator does not come on, either.
Check multi-purpose fuse No.@.
l
Check defogger relay.
l
2) Indicator comes on.
Check defogger.
l
2. Defogger timer is inoperative.
Check defogger timer.
l
NOTE
For information concerning the defogger relay
a n d defoqqer timer, refer to P.54-163 a n d
54-164. --
l
l
Lead-free gasoline
Fine brush